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Date: Sun, 27 Jul 1997 05:06:38 +0300 (EEST)
From: Charlie Root <root@mail.clinet.fi>
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Subject: bin/4176: restore gets confused when run over pipe
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>Number:         4176
>Category:       bin
>Synopsis:       restore gets confused when run over pipe "Changing volumes on pipe input"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jul 26 19:10:01 PDT 1997
>Last-Modified:
>Originator:     Charlie &
>Organization:
Clinet Ltd
>Release:        FreeBSD 2.2-STABLE i386
>Environment:

2.2-STABLE

>Description:

With the following command line:

( dump 0f - /dev/sd0s1x | ssh -c none newmachine 'cd /usr/old-katiska-usr && restore -xvf -' ) | & tee /tmp/logfile

at the end of input, when restore is supposed to start setting the modes
and owners of the files, this appears, endlessly:

abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?
abort? [yn] Changing volumes on pipe input?

All the data has already been copied at this point, and dump has reported 
dump done.  The unfortunate effect is that owners are broken.

I do not seem to be able to produce this on small input, but it happens
repeatably when copying 4G over a network.

>How-To-Repeat:

Use the above line with large enough filesystem.

>Fix:
	
I do not know, but looks like something is missing somewhere.  It could also
be a problem in ssh, maybe it drops data at the end of transfer and
restore thinks early eof to be a volume change ?

>Audit-Trail:
>Unformatted: